CVE-2021-26387
Insufficient access controls in ASP kernel may allow a privileged attacker with access to AMD...
Insufficient access controls in ASP kernel may allow a privileged attacker with access to AMD signing keys and the BIOS menu or UEFI shell to map DRAM regions in protected areas, potentially leading to a loss of platform integrity.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Insufficient access controls in ASP kernel may allow a privileged attacker with access to AMD signing keys and the BIOS menu or UEFI shell to map DRAM regions in protected areas, potentially leading to a loss of platform integrity.
- Record
CVE-2021-26387- CVSS 3.1
- 3.9 Low
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L - Weakness
- CWE-863
- Updated
- 2026-11-02
EUVDEUVD-2021-13193
Insufficient access controls in ASP kernel may allow a privileged attacker with access to AMD signing keys and the BIOS menu or UEFI shell to map DRAM regions in protected areas, potentially leading to a loss of platform integrity.
- Record
EUVD-2021-13193- CVSS 3.1
- 3.9 Low
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-mcm9-3rfg-2mqm
Insufficient access controls in ASP kernel may allow a privileged attacker with access to AMD...
Insufficient access controls in ASP kernel may allow a privileged attacker with access to AMD signing keys and the BIOS menu or UEFI shell to map DRAM regions in protected areas, potentially leading to a loss of platform integrity.
- Record
GHSA-mcm9-3rfg-2mqm- CVSS 3.1
- 3.9 Low
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L - Weakness
- CWE-863
- Updated
- 2026-11-02
NVD
Insufficient access controls in ASP kernel may allow a privileged attacker with access to AMD signing keys and the BIOS menu or UEFI shell to map DRAM regions in protected areas, potentially leading to a loss of platform integrity.
- Record
CVE-2021-26387- CVSS 3.1
- 3.9 Low
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L - Weakness
- CWE-863
- Updated
- 2026-11-02
Affected products
- amd athlon™ 3000 series desktop processors with radeon™ graphics
- amd athlon™ 3000 series mobile processors with radeon™ graphics
- amd epyc™ 7001 series processors
- amd epyc™ 7002 series processors
- amd epyc™ 7003 series processors
- amd epyc™ 9004 series processors
- amd epyc™ embedded 3000 series processors
- amd epyc™ embedded 7002 series processors
- amd epyc™ embedded 7003 series processors
- amd epyc™ embedded 9003 series processors
- amd ryzen™ 3000 series desktop processors
- amd ryzen™ 3000 series mobile processor with radeon™ graphics
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- amd ryzen™ 3000 series processors with radeon™ graphics
- amd ryzen™ 4000 series desktop processors with radeon™ graphics
- amd ryzen™ 4000 series mobile processors with radeon™ graphics
- amd ryzen™ 5000 series desktop processor with radeon™ graphics
- amd ryzen™ 5000 series desktop processors
- amd ryzen™ 5000 series mobile processors with radeon™ graphics
- amd ryzen™ 5000 series processors with radeon™ graphics
- amd ryzen™ 6000 series processors with radeon™ graphics
- amd ryzen™ 7000 series desktop processors
- amd ryzen™ 7035 series processors with radeon™ graphics
- amd ryzen™ embedded 5000 series processors
- amd ryzen™ embedded r1000 series processors
- amd ryzen™ embedded r2000 series processors
- amd ryzen™ embedded v1000 series processors
- amd ryzen™ embedded v2000 series processors
- amd ryzen™ embedded v3000 series processors
- amd ryzen™ threadripper™ 3000 series processors
- amd ryzen™ threadripper™ pro 3000wx series processors
- amd ryzen™ threadripper™ pro 5000wx processors
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-26387 is a low vulnerability (CVSS 3.9) in Amd Athlon™ 3000 Series Desktop Processors With Radeon™ Graphics, published August 13, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.15%, the 3rd percentile. No source names a fixed version.